In the development of dogs, monkeys and dolphins, nourishment and oxygen are provided by the mother to the fetus through the
a. excretory system.
b. cloaca.
c. placenta.
d. both (b) and (c).

Acar company is testing seatbelts using crash test dummies. the company finds that when cars come to a sudden stop, the crash test dummies' bodies continue to move forward. the seat belt keeps the crash test dummies from hitting the back of the seat in front of them. why do the crash test dummies' bodies continue to move forward even though the car stopped? a. the friction opposing their bodies' movement keeps them in motion. b. the inertia of their bodies keeps them in motion. c. the forward acceleration of the car keeps them in motion. d. the gravity pulling on the car keeps them in motion.

Identify any four organelles that should be present in the eukaryotic organism and describe the function of each organelle

Which type of neuron stimulates muscles to contract?